Every small business owner I know has the same instinct: keep work moving, keep invoices going out, keep cash coming in. But there’s one quiet risk that can turn a perfectly normal month into a mess of unpaid invoices, disputed costs, and time-consuming repair work: trading with a company that isn’t actually an active business anymore. If your customer’s registration has been ended, or your supplier has no valid registration or VAT number, you’re not just dealing with “paperwork.” You’re dealing with whether your invoice will stand, whether you can enforce payment, and whether you’ll have to explain yourself later to your accountant, your bank, or the Belastingdienst (the Dutch Tax and Customs Administration).

In the Netherlands, the KvK (Kamer van Koophandel) is the business register. A KvK number tells you whether a company exists as a registered entity and whether it’s active. A VAT number matters because it’s tied to how VAT is charged and reclaimed. When a company is no longer active, is deregistered, or never had a valid setup, the practical impact lands in three places: collectability, VAT, and credibility. Collectability is the obvious one: chasing payment is hard enough when the other party is real; it’s far worse when the business has ceased trading or has no proper legal presence. VAT is the silent one: if you invoice with VAT to a party that isn’t properly registered, or you pay a supplier whose VAT details are not valid, you can end up with VAT you can’t reclaim or VAT you must correct, which means extra work and sometimes extra cost. Credibility is the human one: your own administration starts to look sloppy, and that can affect trust with future clients, lenders, and insurers.

I’ll give you one situation I see more often than you’d expect. A micro-entrepreneur hires a “handy” subcontractor who can start tomorrow. The work gets done, the invoice arrives, and only then do they notice: no proper company details, no valid VAT number, or a KvK that doesn’t match the name. They pay anyway because “the job is finished” and they don’t want conflict. Months later, the question comes during bookkeeping: can this cost be accepted, and can the VAT be reclaimed? Suddenly, the cheap speed turns into a slow, expensive discussion, and the entrepreneur is stuck gathering screenshots, emails, and explanations that should never have been needed.

The fix is not complicated, and it doesn’t need to become a new bureaucracy in your week. Treat it like locking the front door. When you start working with a new customer or supplier, and also when an existing one suddenly changes bank accounts, email domains, trade names, or seems “in a hurry”  take one minute to confirm they’re active in the KvK and that the VAT number is valid and matches the entity you’re dealing with. Make sure the name on the invoice matches the registered name, and that the bank account belongs to the same party. If something is off, pause before you send your invoice or approve theirs. That pause protects your cash flow more than a dozen polite reminders later.

This is not about suspicion; it’s about keeping your business clean and calm. Micro businesses don’t have spare hours for avoidable admin, and they definitely don’t have spare margin for invoices that can’t be enforced or VAT that has to be corrected. A small habit, checking “does this company really exist and is it active?” reduces risk without adding noise. And that’s the kind of risk management that fits the real world: quiet, practical, and done before problems get a chance to grow legs.